Non-REM Sleep

• Stage 1:
  • light-weight sleep
  • simply woke up
  • muscles relax with occasional twitches
  • eye movements area unit slow
• Stage 2:
  • eye movements stop
  • slower brain waves, with occasional bursts of speedy brain waves
• Stage 3:
  • happens presently once you go to sleep and principally within the half of the night
  • deep sleep
  • troublesome to awaken
  • giant slow brain waves, heart and metastasis rates area unit slow and muscles area unit relaxed

REM sleep

• sometimes happens concerning ninety minutes once you go to sleep, and longer, deeper periods occur throughout the half of the night;
• cycles along side the non-REM stages throughout the night
• eyes move quickly behind closed eyelids.
• respiratory, heart rate, and blood pressure are irregular
• dreaming happens
• arm and leg muscles area unit quickly paralytic.